Structural study of SrTiO₃ doped with Mn using X-ray diffraction

Abstract

Monocrystalline Mn:SrTiO3 was prepared from the compounds MnO₂, TiO₂, and SrCO₃, which had equivalent weights of 2.52 g. Mn was doped in this sample at 60 mol%. The sample was heated half hour, and annealed at 1223 K (950°C). The sample had an orientation of (100). The study was performed at room temperature (T = 300 K = 27°C). The structure of this crystal was investigated using X-ray diffraction and found to be cubic (P m3 ̅m). The lattice parameter of the Mn:SrTiO₃ crystal was 3.269 Å. The grain size of this crystal was magnified 5,000 to 100,000 times using scanning electron microscopy and found to be in range of 1.33 to 91.4 nm.

Keywords: Spectrum, grain, crystal structure factor, atomic scattering factor, annealing.